Jazz, IMO he doesn't make any sense to premeditate a murder on a busy late afternoon when so many people are on and about, when your intended victim is dropping off your very own kids at you own place thus making you the last known person to have seen the victim, where your own kids would be an integral part of the crime scene ... not to mention that apparently there isn't one scintilla of evidence to support that theory ... I mean ... not even one solitary piece of evidence that anyone here is aware of. Just my opinion.
As per the physiological profile of Dale and its implications within the more narrow issue of this particular crime , that seems to me not that far removed from the Star Trek idea ... a conclusion in search of an hypothesis, which can only take one so far but not further without demonstrating at least one single thread that connects the whole, thus making the theory rather academic and interesting but ultimately irrelevant where the question of guilt or innocence is the intended issue. JMHO